U.S. runner Jenny Simpson suffered from a stress injury due to her running, and used antigravity treadmill technology to help her recover in time for the 2012 Summer Olympics. [4:17]

Scientists explain the engineering that went into the design of the London Aquatics Center for the 2012 Summer Olympics. In order for swimmers to perform their best, the waves are minimized using features that absorb the wave energy. [4:43]

The principles of fluid dynamics need to be understood by swimmers in order for them to compete at the Olympic level. A scientist explains about drag, thrust, and streamlining using the example of U.S. swimmer Missy Franklin. [4:59]

Scientists explain Usain Bolt's biomechanics which allow him to achieve top acceleration and maintain top speed, despite his above-average size and mass. [5:23]

An electrical engineer explains all the technology behind keeping time at an Olympic event down to thousandths of a second. These include cameras, lasers, and even RFID tags. Timekeeping must be both precise and accurate. [5:34]

A robotics engineer analyzes the athletic movements of U.S. weightlifter Sarah Robles. by using a robotic arm called the WAM Arm to duplicate her movements. [5:34]

A mechanical engineer explains the science that goes into the design of the safety helmets used in the Summer Olympics. [5:35]

Bryan Clay, an Olympic decathlon athlete, worked with engineers using a stereoscopic camera system to record his movements and velocities during his long jump. They could then measure and analyze his performance immediately. [5:37]

A biomechanical engineer explains the science behind the design of wheelchairs in a variety of different Paralympic sports. [5:16]